X = int(input())

if(400<=X and X <=599):
    print(8)
elif(600<=X and X<=799):
    print(7)
elif(800<=X and X<=999):
    print(6)
elif(1000<=X and X<=1199):
    print(5)
elif(1200<=X and X<=1399):
    print(4)
elif(1400<=X and X<=1599):
    print(3)
elif(1600<=X and X<=1799):
    print(2)
elif(1800<=X and X<=1999):
    print(1) X = int(input()) X int(input()) int input() input if(400<=X and X <=599):
    print(8)
elif(600<=X and X<=799):
    print(7)
elif(800<=X and X<=999):
    print(6)
elif(1000<=X and X<=1199):
    print(5)
elif(1200<=X and X<=1399):
    print(4)
elif(1400<=X and X<=1599):
    print(3)
elif(1600<=X and X<=1799):
    print(2)
elif(1800<=X and X<=1999):
    print(1) 400<=X and X <=599 400<=X 400 X X <=599 X 599 print(8) print 8 elif(600<=X and X<=799):
    print(7) 600<=X and X<=799 600<=X 600 X X<=799 X 799 print(7) print 7 elif(800<=X and X<=999):
    print(6) 800<=X and X<=999 800<=X 800 X X<=999 X 999 print(6) print 6 elif(1000<=X and X<=1199):
    print(5) 1000<=X and X<=1199 1000<=X 1000 X X<=1199 X 1199 print(5) print 5 elif(1200<=X and X<=1399):
    print(4) 1200<=X and X<=1399 1200<=X 1200 X X<=1399 X 1399 print(4) print 4 elif(1400<=X and X<=1599):
    print(3) 1400<=X and X<=1599 1400<=X 1400 X X<=1599 X 1599 print(3) print 3 elif(1600<=X and X<=1799):
    print(2) 1600<=X and X<=1799 1600<=X 1600 X X<=1799 X 1799 print(2) print 2 elif(1800<=X and X<=1999):
    print(1) 1800<=X and X<=1999 1800<=X 1800 X X<=1999 X 1999 print(1) print 1 X = int(input()) int(input()) X
X = int(input())

if(400<=X and X <=599):
    print(8)
elif(600<=X and X<=799):
    print(7)
elif(800<=X and X<=999):
    print(6)
elif(1000<=X and X<=1199):
    print(5)
elif(1200<=X and X<=1399):
    print(4)
elif(1400<=X and X<=1599):
    print(3)
elif(1600<=X and X<=1799):
    print(2)
elif(1800<=X and X<=1999):
    print(1)